MCB 2610 Lab Quiz Questions with Correct Answers

MCB 2610 Lab Quiz Questions with Correct Answers What 4 things must always be done before leaving lab (in order)? - ANSWER-1) Dispose of all cultures and plates in the appropriate containers 2) Clean your bench with Wescodyne 3) Take off and put away your lab coat 4) Wash your hands for at least 20 seconds with soap and water Where are plates disposed of? - ANSWER-Gray garbage cans by the door Where are test tubes and caps disposed of? - ANSWER-Waste buckets under sink Where are slides and toothpicks disposed of? - ANSWER-Sharps What first action should be taken for every spill? - ANSWER-Tell a TA The ___ method is a quick and easy way to isolate bacteria. - ANSWER-T-streak How many times do you get culture from the tube while performing a t-streak? - ANSWER-1 ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/11 Who do you contact to reschedule a lab? - ANSWER-Dr. Intrieri The culture tubes are disposed of in the gray trash bins. (TRUE/FALSE) - ANSWER-False What is the first thing you do after a spill? - ANSWER-Tell TA Which of the following is an indirect mode of transmission: an insect, a cellphone, or a sneeze? - ANSWER-cellphone What is the last thing you do before leaving lab? - ANSWER-Wash hands Where are petri dishes disposed of? - ANSWER-Grey binds Where are slides disposed of? - ANSWER-Sharps What must you do to the loop before every use - ANSWER-Sterilize/flame When making a smear of the culture, you heat fix the slide before air drying it completely. (TRUE/FALSE) - ANSWER-False Wiping down the bench with Wescodyne is the last thing you do when leaving the lab. (TRUE/FALSE) - ANSWER-False What is the magnification value of the ONLY objective lens that should come into contact with immersion oil? - ANSWER-100x ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/11 Pertaining to the Gram Stain, cells that retain crystal violet and appear purple are said to be Gram ____. - ANSWER-Positive Your name, the date, and the sample information goes on the lid of the agar dish. (TRUE/FALSE) - ANSWER-False Pertaining to the Gram Stain, cells that do not retain crystal violet and appear pink are said to be Gram ___. - ANSWER-negative What is the purpose of soaking the slide in iodine? - ANSWER-Mordant for crystal violet The first thing you do before leaving lab is dispose of all culture tubes. (TRUE/FALSE) - ANSWER-True Why do you inoculate plates and tubes near the Bunsen burner? - ANSWER-prevent airborne contamination Gram stains and spore stains are examples of simple stains. (TRUE/FALSE) - ANSWER-Fals